Tens cabby mechanism



April 19, 1938- P. BRUNING 2,114,650

TENS CARRY MECHANI SM Original Filed May 27. 1931 Patented Apr. 19, 1938PATENT OFF-ICE 2,114,850 ms m rmcnmsm Paul Briining, Berlin, GermanyApplication May 21, 1931, Serial Ne. 540,401. ne-

newed March 5, 1938. In Germany June 2,

The present invention relates to a tens carry mechanism for a totalizerof calculating machines. It is an object of the present invention toimprove a member and its operation whereby this member will transfer anumber from a wheel of lower denomination to a wheel of higherdenomination by being locked against sliding and will slide when a wheelof higher denomination is actuated to prevent rotation of thewheel oflower denomination.

The invention will be clearly understood from the following descriptiontaken in connection with the accompanying drawing which shows in,

Pig. 1 an end view of themechanism,

Fig. 2 a side view thereof, and in Fig. 3 a side view of a modifiedslide and its pins.

4 oasignates a slide member having an operating tooth 0 b is theoperating wheel or pinion go which drives a numeral wheel e. This wheelor pinion b may be driven manually or by any other suitable means. Eachnumeral wheel e has two pins 0 and 11 secured in one side thereof. Thesepins cooperate with the slots 41 and a in the slide member a, As shownin Fig. 2 any number of elements a, b and e may be provided and asillustrated numeral wheel e is oflower denomination and e is othigherdenomination, and in connection therewith pinion b cooperates with wheele and pinion b with wheel c.

The slide member of Fig. 1 has a notch or shoulder a formed by the slota but in Fig. 3 the slot a is arranged oblique relative to slot a.

The slide munber 4: falls naturally into the positionsshowninl 'lgs. 1and 3butii' desired any suitable means such as a spring may beemployedto continuously urge the slide into the positions shown.

According tong. 3 the locking against slipping 40 due to the operaflngforce, is obtained by the locking action of the guide pin d on theoblique surface It.

Asshowninrigzthewheelsetoe maybe mountedonashaftkandasleeveimayalsobeprovided as shown in Figs. 1 and 3.

The device is operative in an adding operation as follows. In adding,the wheel b is turned clockwise as seen in Figure 1, or toward theoperator in Figure 2 by manipulating these wheels withthefingers.Referrlngtol'lgurelthe wheel e for instance is turned, and will movecounter-clockwise as seen in Figure 1. It .the wheel e' passes from "9"to "0", the wheel e must be turned by one increment to register the"carry". The slide member a which has a transfer tooth d iormedasseeninl'ig. lwithastraight side and an oblique or cam side, the slide a bymeansoi'thetootha willcontactthetoothlofthewbeelb'inthepass'agetrom9"to0"ot 10mm. (01. ass-13s) wheei e. Withthe wheel e turning counterclockwise as seen in Fig. 1, the straightside of tooth a will contact against the tooth f and will attempt topivot the slide about its pivot c in a clockwise direction. This willcause the shoulder a to move against the pin d and will couple the slidea and wheel e together. The wheel b will thus be turned one stepclockwise (Fig. 1) to transfer 1" to the wheel e to thereby carry theamount of 9" to "0" from the wheel e.

However, when a wheel of higher denomination is set the, wheel of lowerdenomination will be inoperative as follows.

When, for instance, the wheel 1: is operated, i1 the wheel e of lowerorder has been standing in such a position that the tooth a of. itsslide a were in the path of a tooth f of the wheel b this tooth f. asseen in Fig. 1, or actually the tooth next to the left or f, will bemoving clockwise and will contact the oblique side of the tooth a Thismovement will cause an opposite rocldng of the slide 0 than thateffected in the carry operation just described. That is, the slide willbe rocked V counterclockwise about its pivot c, and this movement willrelease the pin d from the shoulder a, and allow the slide a to becammed upwardly by the tooth f to thus leave the wheel e undisturbedwhile rotating the wheel e to set a value therein; Thus when anyso-calied operating or adjusting wheel as b is turned clockwise (as inFig. 1) to enter a.number into its associated tens-toothed registeredwheel c, the slide a to the left of wheel e (Fig. ,2) must be eii'ectiveto transfer "one" to the higher order wheel a through the tooth a andwheel b, while the entering wheel 1) must not be eilective to turn alower order wheel as e an undesired movement thru the intermediary ofaslide a and tooth a to the right of the wheel e be actuated.

-I claim as my invention:

Atens carrymechanism foratotalisercomprising in combination "a wheel oflower denom-i inational order and a wheel of higher order, a pinion foreach wheel for operating the same; pins extending from one face of saidlower order wheel on opposite sides of a diameter; and amemberengageable with said pinion of higher order and mounted on said pins forslidable and rockable movement, said member being formed with slots toengage said pins and said slots being so formed that, when said memberis rocked in one direction in a tens carry operation it will be heldagainst sliding by said slots in engagement with said higher pinion butwhen rocked in the other direction in a numeral entry into thetotalizeritwilibe slidonsaidpinsoutofengagement.

with said p o PAUL Baum.

